During an assessment of the cranial nerves, the nurse finds the following: Asymmetry when the client frowns, uneven lifting of the eyebrows, sagging of the lower eyelids, and an escape of air from the right side when the client puffs their cheeks. This would indicate the dysfunction of which of the cranial nerves?
Motor component of IV (Trochlear)
Motor and sensory components of XI (Accessory)
Motor component of VII (Facial)
Motor component of X (Vagus) and sensory component of XII (Hypoglossal)
The Correct Answer is C
A) Motor component of IV (Trochlear): The trochlear nerve primarily controls the superior oblique muscle of the eye, which is responsible for downward and lateral eye movements. The findings described do not relate to eye movement and therefore do not indicate dysfunction of this nerve.
B) Motor and sensory components of XI (Accessory): The accessory nerve innervates the sternocleidomastoid and trapezius muscles, primarily affecting head rotation and shoulder elevation. The symptoms noted in the assessment do not pertain to these muscle functions, so this option is not correct.
C) Motor component of VII (Facial): The signs of asymmetry in frowning, uneven eyebrow lifting, sagging eyelids, and air escaping when puffing the cheeks are characteristic of dysfunction in the facial nerve (cranial nerve VII). This nerve controls the muscles of facial expression, and impairment would lead to the described asymmetrical movements.
D) Motor component of X (Vagus) and sensory component of XII (Hypoglossal): The vagus nerve affects autonomic functions and some swallowing muscles, while the hypoglossal nerve controls tongue movements. Neither nerve is primarily responsible for the facial expressions described in the assessment findings, making this option incorrect.
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Correct Answer is C
Explanation
A) Third left ICS: The third left intercostal space (ICS) is typically associated with the auscultation of the pulmonic valve rather than the tricuspid valve. While it is in the vicinity of the heart, it is not the correct location for assessing the tricuspid area.
B) Second right ICS: The second right intercostal space is where the aortic valve is best heard. This location is important for assessing blood flow through the aorta, but it is not relevant for the tricuspid valve auscultation.
C) Fourth left ICS: The tricuspid valve is best auscultated at the fourth left intercostal space along the left sternal border. This area allows for optimal listening to the sounds produced by the tricuspid valve, providing important information about right heart function.
D) Second left ICS: The second left intercostal space is the auscultation point for the pulmonic valve, not the tricuspid valve. While this area is critical for assessing the heart, it does not correspond to the location for the tricuspid valve.
Correct Answer is C
Explanation
A) Short stature: While body height can play a role in overall musculoskeletal health, short stature is not specifically identified as a risk factor for disc herniation. Other physical characteristics have a more direct impact on spinal issues.
B) Anorexia: Although nutritional status is important for general health, anorexia is not a recognized risk factor for disc herniation. The condition is more related to physical stressors and age rather than dietary habits alone.
C) 39 years of age: Age is a significant risk factor for disc herniation. Most cases occur in adults aged 30 to 50, as degenerative changes in the spine increase vulnerability to herniation. At 39, the client falls within this high-risk age range.
D) Female gender: While certain musculoskeletal conditions may vary by gender, disc herniation does not have a strong gender predisposition. Both men and women are equally affected, making this option less relevant as a specific risk factor.